Home
Class 12
BIOLOGY
In Amphioxus, circulatory system is...

In Amphioxus, circulatory system is

A

Closed

B

Without heart

C

Without respiratory pigment

D

All of above

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • STRUCTURAL ORGANISTION IN ANIMALS (ANIMAL TISSUES & COCKROACH)

    ALLEN|Exercise EXERCISE-IV|4 Videos

  • TEST PAPER

    ALLEN|Exercise Exercise|20 Videos

Similar Questions

Explore conceptually related problems

Amphioxus has

In closed circulatory system

Assertion : Closed circulatory system is less efficient than open circulatory system Reason : The blood flow is slow is closed circulatory system than in open circulatory system.

In cephalochordates, the circulatory system is peculiar because

An insect circulatory system is best described as:

Assertion : The open circulatory system is more efficient than the closed circulatory system. Reason : The blood flows far more rapidly in open circulatory system than in the closed one.

The process of blood clot formation within the circulatory system is

Advantage of closed circulatory system is

Which of the following has closed circulatory system ?

Which of the following has closed circulatory system ?

ALLEN-TARGET : PRE-MEDICAL (ANIMAL KINGDOM)-S
  1. Chondrichthyes can be differentiated from osteichthydes externally by

    Text Solution

    |

  2. Which of the following is a true Amphibian ?

    Text Solution

    |

  3. In Amphioxus, circulatory system is

    Text Solution

    |

  4. A file like rasping organ for feeding called Radula, present in the ph...

    Text Solution

    |

  5. Which of the following animals belong to the same phylum?

    Text Solution

    |

  6. The disease which is caused by helminth parasite of man's blood that h...

    Text Solution

    |

  7. Silkworm is differed from prawn and scorpion in having of :-

    Text Solution

    |

  8. If earthworm, insect and snail are kept together, with which single wo...

    Text Solution

    |

  9. The cells, those aggregate to form internal buds during asexual reprod...

    Text Solution

    |

  10. is/are absent in Echinoderms but present in mollusca

    Text Solution

    |

  11. Which is secondary// intermediate host of Hookworm

    Text Solution

    |

  12. Which of the following is correct match of character with phylum ?

    Text Solution

    |

  13. Which group of animals belong to the same phylum

    Text Solution

    |

  14. In which of the following, trichocyst is present?

    Text Solution

    |

  15. Digestive system is complete where

    Text Solution

    |

  16. An animal in which metameric segmentation is present ?

    Text Solution

    |

  17. In protozoa, locomotory structures are absent in the class

    Text Solution

    |

  18. Monocystis differs from Paramoecium due to the absence of ?

    Text Solution

    |

  19. Which of the following is universally found in all protozoans ?

    Text Solution

    |

  20. Which of the following is not an example of sponges ?

    Text Solution

    |